Change user sub-project structure

user/Cargo.toml

@@ -1,6 +1,7 @@
-[workspace]
+[package]
+name = "ucore-user-programs"
+version = "0.1.0"
+authors = ["Runji Wang <wangrunji0408@163.com>"]
 
-members = [
-    "ucore-ulib",
-    "hello",
-]
+[dependencies]
+"ucore-ulib" = { path = "ucore-ulib" }

user/Makefile

@@ -1,2 +1,5 @@
+# arch = {riscv32, x86_64}
+arch := riscv32
+
 all:
-	@RUST_TARGET_PATH=$(pwd) xargo build --target x86_64-blog_os
+	@RUST_TARGET_PATH=$(shell pwd) xargo build --target $(arch)-ucore

user/hello/Cargo.toml

@@ -1,7 +0,0 @@
-[package]
-name = "hello"
-version = "0.1.0"
-authors = ["WangRunji <wangrunji0408@163.com>"]
-
-[dependencies]
-ucore-ulib = { path = "../ucore-ulib" }

user/ucore-ulib/src/syscall.rs

@@ -39,7 +39,7 @@ fn sys_call(id: usize, arg0: usize, arg1: usize, arg2: usize, arg3: usize, arg4:
             : "memory"
             : "volatile");
         #[cfg(target_arch = "x86_64")]
-            asm!("int 0x80"
+            asm!("int 0x40"
             : "={rax}" (ret)
             : "{rax}" (id), "{rdi}" (arg0), "{rsi}" (arg1), "{rdx}" (arg2), "{rcx}" (arg3), "{r8}" (arg4), "{r9}" (arg5)
             : "memory"